Cracked my skull on the Holy Grail

Using last month

MP sales:

https://marketplace.tf/items/tf2/1111;5;u3003

$8.21 / $1.80 = 4.56 keys

$8.21 / $1.78 = 4.61 keys

$11 / $1.79 = 6.15 keys

bot.tf sales:

https://imgur.com/a/knI9kYi

Sold:

1 @ 5 keys, 22.00 ref

1 @ 5 keys, 34.00 ref

1 @ 5 keys, 24.00 ref

2 @ 5 keys, 36.00 ref

Bought:

1 @ 5 keys, 6.00 ref

1 @ 5 keys, 7.00 ref

1 @ 5 keys, 8.33 ref

Other sales:

Sale 1:

untrace

https://backpack.tf/profiles/76561198340634356#!/compare/1573776000/1573862400

https://backpack.tf/profiles/76561198298302872#!/compare/1573776000/1573862400

Sale 2:

bulk

https://backpack.tf/profiles/76561198071260200#!/compare/1571961600/1572048000

https://backpack.tf/profiles/76561198061836787#!/compare/1571961600/1572134400

Sale 3:

5 keys + 32 ref

https://backpack.tf/profiles/76561198316866907#!/compare/1571616000/1571788800

https://backpack.tf/profiles/76561198080179568#!/compare/1571702400/1571788800

Sale 4:

untrace

https://backpack.tf/profiles/76561198363395191#!/compare/1571356800/1571443200

https://backpack.tf/profiles/76561198071200441#!/compare/1571529600/1571875200

https://backpack.tf/item/5717626753 - scrap.tf

https://backpack.tf/item/5345909479 - mp and bot.tf sales

current buyers/sellers:

https://imgur.com/a/Sn4K5Ta

excluding sales under 5.16 keys

Sales:

2x 4.5 keys

3x 5 keys

2x 5.5 keys

4x 5.75 keys

1x 6 keys